com.io7m.xstructural.tests.XSTestDirectories Maven / Gradle / Ivy

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/*
 * Copyright © 2021 Mark Raynsford  https://www.io7m.com
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

package com.io7m.xstructural.tests;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.util.UUID;

public final class XSTestDirectories
{
  private static final Logger LOGGER =
    LoggerFactory.getLogger(XSTestDirectories.class);

  private XSTestDirectories()
  {

  }

  public static Path createBaseDirectory()
    throws IOException
  {
    final var path =
      Path.of(System.getProperty("java.io.tmpdir")).resolve("xstructural");
    Files.createDirectories(path);
    return path;
  }

  public static Path createTempDirectory()
    throws IOException
  {
    final var path = createBaseDirectory();
    final var temp = path.resolve(UUID.randomUUID().toString());
    Files.createDirectories(temp);
    return temp;
  }

  public static Path resourceOf(
    final Class clazz,
    final Path output,
    final String name)
    throws IOException
  {
    final var internal = String.format("/com/io7m/xstructural/tests/%s", name);
    final var url = clazz.getResource(internal);
    if (url == null) {
      throw new NoSuchFileException(internal);
    }

    final var target = output.resolve(name);
    LOGGER.debug("copy {} {}", name, target);

    try (var stream = url.openStream()) {
      Files.copy(stream, target, StandardCopyOption.REPLACE_EXISTING);
    }
    return target;
  }

  public static InputStream resourceStreamOf(
    final Class clazz,
    final Path output,
    final String name)
    throws IOException
  {
    return Files.newInputStream(resourceOf(clazz, output, name));
  }
}